Ender-3 Z axis dual motor parts

- nema 17 : 42 X (34 or 40)mm
- lead screw : t8, p2, l8(with nut)
- coupler : 5 X 8mm
- m5 x 50mm : 3 (carriage)
- m3 x 6mm : 4(top of the holder)
- m3 x 10mm : 4(side of the holder)
- m3 x 20mm : 4(lead screw nut)
- m3 t-nut : 4(side of the holder)
- m3 washer : 4(side of the holder)
- Motor driver (or It can be serial or parallel with existing z motor driver)
- Motor cable